The Northumberland and Durham coalfield : the carbonisation of coal of relatively low coking power : the Northumberland Yard seam.
| Typ dokumentu: | Kniha |
|---|---|
| Jazyk: |
angličtina |
| Vydavatel: |
London :
Her Majesty's Stationary Office,
1933.
|
| Edice: |
Physical and chemical survey of the national coal resources ;
No. 26 |
| Předmět: | |